This is a mostly sand trail. It is well marked with signs indicating upcoming turns and stops, as well as periodic maps indication your position along the trail. Some stretches allow speeds between 30 and 40 mph, others require closer to 5. there are a number of mogul type bumps making slow downs necessary in some areas. There is also a pretty steep/tight/twisty hill climb if you decide to bypass the fence keeping fullsize ORVs out of the ATV trails near the end (which is easy to do because it isn't very well marked at the end).
Maps can be found here:
http://www.dnr.state.mi.us/spatialdatal ... lkaska.pdfMichigan ORV sticker is required.